19984080 has 40 divisors (see below), whose sum is σ = 61951392. Its totient is φ = 5329024.

The previous prime is 19984073. The next prime is 19984087. The reversal of 19984080 is 8048991.

It is an interprime number because it is at equal distance from previous prime (19984073) and next prime (19984087).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19984087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41394 + ... + 41873.

Almost surely, 2^19984080 is an apocalyptic number.

19984080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19984080 is an abundant number, since it is smaller than the sum of its proper divisors (41967312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19984080 is a wasteful number, since it uses less digits than its factorization.

19984080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83283 (or 83277 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 19984080 is about 4470.3556905463. The cubic root of 19984080 is about 271.3697199936.

The spelling of 19984080 in words is "nineteen million, nine hundred eighty-four thousand, eighty".